--- /dev/null
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2017.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaims all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ *
+ * Main source file for the DualVirtualSerial demo. This file contains the main tasks of the demo and
+ * is responsible for the initial application hardware configuration.
+ */
+
+#include "DualVirtualSerial.h"
+
+/** Contains the current baud rate and other settings of the first virtual serial port. While this demo does not use
+ * the physical USART and thus does not use these settings, they must still be retained and returned to the host
+ * upon request or the host will assume the device is non-functional.
+ *
+ * These values are set by the host via a class-specific request, however they are not required to be used accurately.
+ * It is possible to completely ignore these value or use other settings as the host is completely unaware of the physical
+ * serial link characteristics and instead sends and receives data in endpoint streams.
+ */
+static CDC_LineEncoding_t LineEncoding1 = { .BaudRateBPS = 0,
+ .CharFormat = CDC_LINEENCODING_OneStopBit,
+ .ParityType = CDC_PARITY_None,
+ .DataBits = 8 };
+
+/** Contains the current baud rate and other settings of the second virtual serial port. While this demo does not use
+ * the physical USART and thus does not use these settings, they must still be retained and returned to the host
+ * upon request or the host will assume the device is non-functional.
+ *
+ * These values are set by the host via a class-specific request, however they are not required to be used accurately.
+ * It is possible to completely ignore these value or use other settings as the host is completely unaware of the physical
+ * serial link characteristics and instead sends and receives data in endpoint streams.
+ */
+static CDC_LineEncoding_t LineEncoding2 = { .BaudRateBPS = 0,
+ .CharFormat = CDC_LINEENCODING_OneStopBit,
+ .ParityType = CDC_PARITY_None,
+ .DataBits = 8 };
+
+
+/** Main program entry point. This routine configures the hardware required by the application, then
+ * enters a loop to run the application tasks in sequence.
+ */
+int main(void)
+{
+ SetupHardware();
+
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+ GlobalInterruptEnable();
+
+ for (;;)
+ {
+ CDC1_Task();
+ CDC2_Task();
+ USB_USBTask();
+ }
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+#if (ARCH == ARCH_AVR8)
+ /* Disable watchdog if enabled by bootloader/fuses */
+ MCUSR &= ~(1 << WDRF);
+ wdt_disable();
+
+ /* Disable clock division */
+ clock_prescale_set(clock_div_1);
+#elif (ARCH == ARCH_XMEGA)
+ /* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
+ XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
+ XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
+
+ /* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
+ XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
+ XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
+
+ PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
+#endif
+
+ /* Hardware Initialization */
+ Joystick_Init();
+ LEDs_Init();
+ USB_Init();
+}
+
+/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and
+ * starts the library USB task to begin the enumeration and USB management process.
+ */
+void EVENT_USB_Device_Connect(void)
+{
+ /* Indicate USB enumerating */
+ LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+}
+
+/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
+ * the status LEDs and stops the USB management and CDC management tasks.
+ */
+void EVENT_USB_Device_Disconnect(void)
+{
+ /* Indicate USB not ready */
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+}
+
+/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration
+ * of the USB device after enumeration - the device endpoints are configured and the CDC management tasks are started.
+ */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+ bool ConfigSuccess = true;
+
+ /* Setup first CDC Interface's Endpoints */
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC1_TX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC1_RX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC1_NOTIFICATION_EPADDR, EP_TYPE_INTERRUPT, CDC_NOTIFICATION_EPSIZE, 1);
+
+ /* Setup second CDC Interface's Endpoints */
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC2_TX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC2_RX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC2_NOTIFICATION_EPADDR, EP_TYPE_INTERRUPT, CDC_NOTIFICATION_EPSIZE, 1);
+
+ /* Reset line encoding baud rates so that the host knows to send new values */
+ LineEncoding1.BaudRateBPS = 0;
+ LineEncoding2.BaudRateBPS = 0;
+
+ /* Indicate endpoint configuration success or failure */
+ LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
+}
+
+/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to
+ * the device from the USB host before passing along unhandled control requests to the library for processing
+ * internally.
+ */
+void EVENT_USB_Device_ControlRequest(void)
+{
+ /* Determine which interface's Line Coding data is being set from the wIndex parameter */
+ void* LineEncodingData = (USB_ControlRequest.wIndex == 0) ? &LineEncoding1 : &LineEncoding2;
+
+ /* Process CDC specific control requests */
+ switch (USB_ControlRequest.bRequest)
+ {
+ case CDC_REQ_GetLineEncoding:
+ if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
+ {
+ Endpoint_ClearSETUP();
+
+ /* Write the line coding data to the control endpoint */
+ Endpoint_Write_Control_Stream_LE(LineEncodingData, sizeof(CDC_LineEncoding_t));
+ Endpoint_ClearOUT();
+ }
+
+ break;
+ case CDC_REQ_SetLineEncoding:
+ if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
+ {
+ Endpoint_ClearSETUP();
+
+ /* Read the line coding data in from the host into the global struct */
+ Endpoint_Read_Control_Stream_LE(LineEncodingData, sizeof(CDC_LineEncoding_t));
+ Endpoint_ClearIN();
+ }
+
+ break;
+ case CDC_REQ_SetControlLineState:
+ if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
+ {
+ Endpoint_ClearSETUP();
+ Endpoint_ClearStatusStage();
+ }
+
+ break;
+ }
+}
+
+/** Function to manage CDC data transmission and reception to and from the host for the first CDC interface, which sends joystick
+ * movements to the host as ASCII strings.
+ */
+void CDC1_Task(void)
+{
+ char* ReportString = NULL;
+ uint8_t JoyStatus_LCL = Joystick_GetStatus();
+ static bool ActionSent = false;
+
+ /* Device must be connected and configured for the task to run */
+ if (USB_DeviceState != DEVICE_STATE_Configured)
+ return;
+
+ /* Determine if a joystick action has occurred */
+ if (JoyStatus_LCL & JOY_UP)
+ ReportString = "Joystick Up\r\n";
+ else if (JoyStatus_LCL & JOY_DOWN)
+ ReportString = "Joystick Down\r\n";
+ else if (JoyStatus_LCL & JOY_LEFT)
+ ReportString = "Joystick Left\r\n";
+ else if (JoyStatus_LCL & JOY_RIGHT)
+ ReportString = "Joystick Right\r\n";
+ else if (JoyStatus_LCL & JOY_PRESS)
+ ReportString = "Joystick Pressed\r\n";
+ else
+ ActionSent = false;
+
+ /* Flag management - Only allow one string to be sent per action */
+ if ((ReportString != NULL) && (ActionSent == false) && LineEncoding1.BaudRateBPS)
+ {
+ ActionSent = true;
+
+ /* Select the Serial Tx Endpoint */
+ Endpoint_SelectEndpoint(CDC1_TX_EPADDR);
+
+ /* Write the String to the Endpoint */
+ Endpoint_Write_Stream_LE(ReportString, strlen(ReportString), NULL);
+
+ /* Finalize the stream transfer to send the last packet */
+ Endpoint_ClearIN();
+
+ /* Wait until the endpoint is ready for another packet */
+ Endpoint_WaitUntilReady();
+
+ /* Send an empty packet to ensure that the host does not buffer data sent to it */
+ Endpoint_ClearIN();
+ }
+
+ /* Select the Serial Rx Endpoint */
+ Endpoint_SelectEndpoint(CDC1_RX_EPADDR);
+
+ /* Throw away any received data from the host */
+ if (Endpoint_IsOUTReceived())
+ Endpoint_ClearOUT();
+}
+
+/** Function to manage CDC data transmission and reception to and from the host for the second CDC interface, which echoes back
+ * all data sent to it from the host.
+ */
+void CDC2_Task(void)
+{
+ /* Device must be connected and configured for the task to run */
+ if (USB_DeviceState != DEVICE_STATE_Configured)
+ return;
+
+ /* Select the Serial Rx Endpoint */
+ Endpoint_SelectEndpoint(CDC2_RX_EPADDR);
+
+ /* Check to see if any data has been received */
+ if (Endpoint_IsOUTReceived())
+ {
+ /* Create a temp buffer big enough to hold the incoming endpoint packet */
+ uint8_t Buffer[Endpoint_BytesInEndpoint()];
+
+ /* Remember how large the incoming packet is */
+ uint16_t DataLength = Endpoint_BytesInEndpoint();
+
+ /* Read in the incoming packet into the buffer */
+ Endpoint_Read_Stream_LE(&Buffer, DataLength, NULL);
+
+ /* Finalize the stream transfer to send the last packet */
+ Endpoint_ClearOUT();
+
+ /* Select the Serial Tx Endpoint */
+ Endpoint_SelectEndpoint(CDC2_TX_EPADDR);
+
+ /* Write the received data to the endpoint */
+ Endpoint_Write_Stream_LE(&Buffer, DataLength, NULL);
+
+ /* Finalize the stream transfer to send the last packet */
+ Endpoint_ClearIN();
+
+ /* Wait until the endpoint is ready for the next packet */
+ Endpoint_WaitUntilReady();
+
+ /* Send an empty packet to prevent host buffering */
+ Endpoint_ClearIN();
+ }
+}
+
projects / qmk_firmware.git / blobdiff